store-bought
adjective US uk/ˈstɔː.bɔːt/ us/ˈstɔːr.bɑːt/ (UK shop-bought)
（食物）商店里买的，现成的
Store-bought food is bought in a shop and not made at home.
Why use store-bought pastry when it's so easy to make your own? 自己做糕饼那么容易，为什么还要买现成的呢？